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. 1990 Oct;34(10):1961–1965. doi: 10.1128/aac.34.10.1961

Inhibition of growth of Toxoplasma gondii by qinghaosu and derivatives.

O Y Ke 1, E C Krug 1, J J Marr 1, R L Berens 1
PMCID: PMC171972  PMID: 2291661

Abstract

The antimalarial compound qinghaosu (artemisinin) was tested in vitro for the ability to inhibit plaque formation by Toxoplasma gondii in fibroblasts. Qinghaosu at 0.4 microgram/ml for 5 days eliminated all plaques and microscopic foci of T. gondii. At 1.3 micrograms/ml for 14 days, qinghaosu completely eliminated T. gondii. Pretreatment of host cells or T. gondii with qinghaosu had no effect on T. gondii growth. There was no apparent toxicity to human fibroblasts in long-term studies. Of the six qinghaosu derivatives tested, dihydroqinghaosu, 1-propyl-ether-qinghaosu, and 1-butyl-ether-qinghaosu were comparable to qinghaosu. Ethyl-ether-qinghaosu (arteether) and sec-butyl-ether-qinghaosu were more effective. Methyl-ether-qinghaosu (artemether) was the most effective, with a potency approximately 10-fold greater than that of qinghaosu.

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1961

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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